In geography and geodesy, a meridian is the locus connecting points of equal longitude, which is the angle (in degrees or other units) east or west of a given prime meridian (currently, the IERS Reference Meridian). [1] . In other words, it is a coordinate line for longitudes, a line of longitude.

Understanding the Context

The meaning of MERIDIAN is a great circle on the surface of the earth passing through the poles. How to use meridian in a sentence. meridian, imaginary north–south line on the Earth’s surface that connects both geographic poles; it is used to indicate longitude. The 40th meridian, for example, has a longitude of 40° E or 40° W.

Key Insights

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Final Thoughts

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Find a dealer, register a product or contact Meridian to become a partner. Greenwich meridian, an imaginary line, last established in 1851, used to indicate zero degrees longitude. It passes through Greenwich, London, and ends at the North and South poles.